Hoisting mechanism



April 30, 1935. 11g-056090 1,999,203

HOISYTING MECHANISM Filed Deo. 30, 1932 2 Shets-Sheet l prill 30, 1935.4 R. c. osGooD 1,999,203'

' HoIsTING MECHANISM f v Filed Dec.' 50, 1932 l 2 Sheets-Sheet 2 "Hulp" inn. K

Patented Apr. 3G, 1935 PATENT GFFICE HOISTING MECHANISM Robert C. Osgood, Claremont, N. H., assignor to Sullivan Machinery Company, a corporation of Massachusetts Application December 30, 1932, Serial No. 649,590

21 Claims.

y This invention relates to hoisting mechanisms,

and more particularly to. improvements in the control mechanism for a hoisting mechanism of the double drum type.

. An object of this invention is to provide an improved hoisting mechanism. Another object is to provide an improved hoisting mechanism of the double drum type having improved control means. A further object is to provide an improved drive control means for the hoisting drums of a hoist of the above character and improved drum braking means, the drum drive control means and the braking means having a common control means whereby the same may be operated in an improved `and simpliiied manner. Yet another object is to provide lin a hoist of the above character improved braking means for preventing undesirable spinning of the hoist drums when the latter are disconnected from their driv- .ing means. Still another object is to provide an improved drum drive control means and drum braking means for the hoisting drums of a double drum hoist, the drum drive control means and the braking means operated by a single manual control lever. These and other objects and aclvantages of the invention will, however, hereinafter more fully appear.

In the accompanying drawings there is shown for purposes of illustration one form and a modification thereof which the invention may assume in practice.

In these drawings,- Fig. l is a plan view of a hoisting mechanism having embodied therein the illustrative form of the improved control means.

Fig. 2 is a side elevational view of the hoisting mechanism shown in Fig. 1.

Fig. 3 is a transverse vertical sectional View taken substantially on line 3 3 of Figs. 2 and 4. Fig. 4 is a transverse vertical sectional View taken substantially on line 4-4 of Fig. 3,

Fig. 5 is a detail sectional view illustrating a modified form of control mechanism.

In this illustrative construction there is shown a hoisting mechanism of the double drum type comprising a base i having mounted thereon at its opposite sides upstanding brackets 2, 2 having journaled Within bearings therein the hubs 3 of control elements 4 of the control mechanism to be later described. Suitably journaled within bearings carried within the hubs 3, and extending transversely across the base is a drum driving and supporting shaft 5 on which there are suitably journaled hoisting drums 6 and 1. Supi ported on the base at the side of the hoisting drum and arranged with its axis parallel with the drum axes is a motor 8 having fixed to its power shaft a chain sprocket 9 connected by an endless chain l, suitably housed within a housing il, to a chain sprocket l2 keyed at I3 to one end of the drive shaft 5. Keyed at i4 to the drive shaft is a spur gear l5 meshing with a spur drum drive gear I6 suitably journaled on a shaft Il mounted Within the drum 6 and arranged parallel with the shaft 5, as shown in Fig. 3. The drum drive gear i6 meshes with an internal gear i8 formed within and integral with the rotatable control element 4. A spur gear i9 keyed to the opposite end of the shaft 5 meshes with a gear 20, similar to the gear I6, which in turn meshes with an internal gear 2l formed on the rotatable control element 4 at the opposite end of the drums, eifects drive of the hoisting drum 1. Each of the control elements fi, il is provided with a braking surface 22, and cooperating with these braking surfaces are brake bands 23 and 24, respectively. When one or the other of the brake bands 23, 24 is applied, one of the control elements t is held against rotation., and as the drive shaft 5 is driven, the drive gear fixed to the shaft meshing with the drum drive gear causes the latter to roll around the internal gear as a trackway, thereby eiecting drive of the hoisting drum.v Cooperating with braking surfaces 25 formed on the adjacent ends of the hoisting drums are brake bands 26, 21, respectively. These brake bands 26, 27 constitute spinning brakes for preventing undesirable rotation of the drums when the latter are disconnected from their driving means, and as shown in Fig. 4, these spinning brakes each comprise a brake band 28 partially encircling the braking surface on the drum and adjustably held in position by a plate 29 secured to the hoist base, the brake band having secured thereto a bolt element 3!) having threaded thereon a nut 3| engaging the lower side of the plate 29 and having a suitable operating handle 32. Interposed between a washer 33 on the bolt and the plate 29 is a coiled spring 3ft which normally urges the brake band toward its released position. The opposite end oi the brake band 23 has Xed thereto a bolt 35 having mounted thereon adjusting nuts 36. Interposed between washers 3l and 38 on the bolt 35 is an operating element to be later described, said washer 38 being yieldably held in engagement with the operating element by a coiled spring 39 interposed between the washer and the nuts 36. 'I'he amount of slack in the released brake band is variable by adjusting the 69 meshing with a bevel gear I6 likewise keyed i l each of the levers 62,

nut 3E, while the load imparted to the brake may be regulated by adjusting the nuts 36 to vary the tension or the spring S9.

Now referring to the improved operating means for the drum drive control means and the braking means, it will be noted that arranged parallel with the drum axes and suitably mounted within the sides of the base l is a transverse; operating rod 45, while surrounding the rod 45 and rotatable relative thereto is a tubular cperating rod 46. Keyed at il to the rod 45 is an operating lever G8, while keyed to the tubular rod "i6 is a similar operating lever @9. The lever 49 is pivotally connected at 56 to a link 5l in turn pivotally connected at its upper end at 52 to an operating lever 53. The lever 53 is in turn pivotally connected at 54! to one end of the brake band 24. The lever 53 is in the form of a bell-crank and is pivotally connected at 55 to a link 56 in turn pivotally connected at 5l to the opposite end of the brake band Z13. The lever 48 is oonnected through a similar link 58 pivotally connected at its upper end to a lever 53 connected to one end of the brake band 23, the lever 59 connected to the opposite end of the brake band by a link 6e. It will thus be seen that when one or the other of the levers 53, 59 is swung` downwardly, the ends of the brake band are drawn together, thereby to ellect application of the brake, the brake being released when the lever is swung upwardly. Keyed at 6l, as shown in Fig. 3, to the rod l5 is a lever 62, while keyed 'to the .tubular rod 16 and arranged adjacent the lever 52 is a similar lever 63. As shown in Fig. 4, 63 has formed at its outer extremity an opening 6d through which the bolts 35 of the spinning brakes extend, the outer extremity of the lever 62 being arranged between the washers 3?, 3S on the bolt 35 in a manner I heretofore described. Keyed at 65 to the rod 5 is arbevel gear 66 meshing with a bevel gear 6l keyed to an operating or control shaft 66 herein extending longitudinally along one side or" the base l, as shown in Fig. l. Keyed to the tubular rod i6 adjacent the bevel gear 66 is a bevel gear to the Yrod 68. This rod is suitably journaled withina housing "il for the bevel gearing and within a bracket 'i2 xed to the side of the base. Keyed to the rod 68 is a single operating lever I3.

In the modified construction shown in Fig. 5, the bevel gears 6l, 'i6 meshing with the bevel gears 66, 69 are fixed to operating rods 'l5 and "I6, respectively, each of these operating rods having a separate operating handle Il, I8, re-

spectively.

In the operation of the improved hoist control means, it will be noted that when the lever 'i3 is swung from the position shown in Fig. l in-` wardly to its opposite position, the bevel gear 6l rotates the `bevel gear 66, therebyV rotating the control rod 6, thereby swinging the lever 238 downwardly to elect, through the link and lever connection 58, i9 and 66, application of the brake band 5.23, thereby holding the control element 4 stationary, and as a result, the hoisting drum 6 is driven. Simultaneously, the control lever 62 is swung upwardly to release the spinning brake 26 for the drum 6. At the same time the bevel gearV lll rotates the bevel gear 69 in the direction opposite from the bevel gear 66, thereby turning the tubular rod 46 in a direction to release the brake band 2li for the drum l and to apply the spinning brake 2l .for the drum l.' `When the control lever 'i3 is swung' into the opposite direction, the control brake 23 for the drum 6 is released, while the drum spinning brake 26 is applied, and at the same time the control brake 2li for the drum 'l is applied while the spinning brake 2l is released.

In the form of the invention shown in Fig. 5, wherein separate control levers 1l, 18 are provided, the drum control brake and the spinning brakes for the drums 6 and l may be independently controlled, it'being possible to operate independently the control rods 45, 46. Otherwise this form of the invention is identical to that above described.

As a result of this invention, it will be. noted that an improved control means is provided for a hoisting mechanism of the double drum type where the driving and braking of the drums may be controlled in an improved and simplified manner. It will further be noted that by the provision of a single control lever as in the preferred form of the invention, it is possible to operate the drum drive control means to the drum spinning brakes by the simple movement of .this single lever, the lever when swung in one position effecting drive of one drum and braking ofthe other, while when swung in the opposite direction the driving and braking of the drums is reversed. These and other uses and advantages of the improved hoisting mechanism will beV clearly apparent to those skilled in the art.

While there is in this application specifically described one form which the invention may assume in practice, it will be understood that. this form of the same is shown for purposes of illustration and that the invention may be modied and embodied in various other forms without departing from its spirit or the scope of the' appended claims.

What I claim as new anddesire to secure by Letters Patent is:

l. In ay hoisting mechanism, relatively rotatable hoisting drums, drum fdriving means for each drum including planetary drum driving gearing having a frictionally controlled reaction gear, drum braking means for each drum, and common controlling means for the reaction gears of said drum driving means and the drum braking means for both drums.

2. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving 'means for each drum including planetary drum driving gearing having a frictionally controlled reaction gear, drum braking means for each drum, and a common control lever for controlling the reaction gears of said drum driving means and said drum braking means.

3. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum including planetary drum driving gearing having a frictionally controlled reaction gear, drum braking means for each drum, and a common control lever for controlling the :reaction gears of said drum driving means and said drum braking means, said lever when moved in one direction into one position connecting the drum driving means for one drum while the braking means for the other drum is applied and vice versa.

4. In a hoisting mechanism, relatively rotatable hoisting drurns, drum driving means for eachy drum including planetary drum driving gearing having a frictionally controlled reaction gear,

drum braking meansfor each drum, .and'con-V trolling means for thereaction gears of said drum driving means and said drum braking "means-including a common control elementv for both drums.

5. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum, drum braking means for each drum, and

controlling means for said drum driving means I means and said braking means including a oommon control lever for both drums, and means operated by said lever including a control shaft, oppositely rotatable operating rods for operating the drive control means and the braking means,

`and gearing between said control shaft and said operating rods for rotating the latter in opposite directions as said shaft is rotated in one direction.

7. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum, drum braking means for each drum, and controlling means for said drum driving means and said braking means including a common control lever for both drums, and means operated by said lever including a control shaft, oppositely rotatable operating rods for operating the drive control means and the braking means, and bevel gearing between said control shaft and said operating rods for rotating the latter in opposite directions as said shaft is rotated in one direction.

8. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum, drum braking means for each drum, and controlling means for said drum driving means and said braking means including a common control lever for both drums, and means operated by said lever including a control shaft, oppositely rotatable operating rods for operating the drive control means and the braking means, and bevel gearing between said control shaft and said operating rods for rotating the latter in opposite directions as said shaft is rotated in one direction, said bevel gearing including coaxial bevel gears xed to said control shaft and coaxial bevel gears xed to said operating rods and meshing with said bevel gears, respectively.

9. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum, control means for said drum driving means, respectively, and operating means for said control means including relatively rotatable operating rods arranged parallel with the drum axes, a control shaft having an operating lever and arranged at right angles to the axes of the control rods, and bevel gearing connecting said control shaft to said operating rods.

10. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum, control means for said drum driving means, respectively, and operating means for said control means including relatively rotatable operating rods arranged parallel With the drum axes, a control shaft having an operating lever and arranged at right angles vto the axes of the control rods, and bevel gearing connecting said control shaft to said operating rods, said operating lever when moved into one position applying the drum drive contro-l means for one drum while simultaneously releasing the drum drive control means for the other drum.

11. In a winding mechanism, relatively rotatable cable Winding drums, drum driving means foreach drum, drum braking means for each drum and common controlling means for said drum driving means and said drum braking means for both drums including rotatable control means arranged parallel with the drum axes and extending along the sides of the drums, one control means for the driving and braking means for one drum and another control means for the driving and braking means for the other drum, said control means being simultaneously rotatable in opposite directions, and a common control element for said control means for eiectingsimultaneous opposite rotation of said control means.

l2. In a Winding mechanism, relatively rotatable cable winding drums, drum driving means for each drum, drum braking means for each drum. a common control lever for controlling said drum driving means and said drum braking means, and oppositely rotatable control means operated by said lever including control means for the driving and braking means for one drum and another control means for the driving and braking means for the other drum, said control means beingfoperatively connected to said control lever and simultaneously rotatable thereby in opposite directions.

i3. In a winding mechanism, relatively rotatable cable winding drums, drum driving means for each drum, drum braking means for each drum, a common control lever for controlling said drum driving means and said drum braking means, and oppositely rotatable control means for the driving and braking means for one drum and for the driving and braking means for the other drum, said control means being operatively connected to said control lever and simultaneously rotatable thereby in opposite directions, said control lever when moved in one direction into one position connecting the drum driving means for one drum while the braking means for the other drum is applied and vice versa.

14. In a winding mechanism, relatively rotatable cable winding drums, drum driving means for each drum, drum braking means for each drum, and oppositely rotatable controlling means for said drum driving means and said drum braking means and arranged parallel with the drum axes and extending along the sides oi the drums, one control means for. the driving and braking means for one drum and another control means for the driving and braking means for the other drum, and a common control element for the control means for both drums by which element said control means are simultaneously rotatable in mutually opposite directions.

15. In a winding mechanism, relatively rotatable cable winding drums, drum driving means for each drum, drum braking means for each drum, and control means for said driving means and said braking means whereby when one drum is connected to its driving means the other drum is braked and including a control rod operatively connected to the drum driving and braking means for one drum, a relatively rotatable control rod operatively connected to the drum driving and braking means for the other drum, a control shaft operatively connected to said rods, and an operating member for rotating said control shaft.

16. In a winding mechanism, relatively rotatn un able-cable Winding drums, drum driving means for each drum, drum brakingv means for each drum,.and control meansfor said driving means and said brakingy means whereby When one drum is connected to its driving means the other drum is braked, saidvcontrol means including a control rod operatively connected to the drum driving means and braking means for one. drum, and a relatively rotatable control rod operatively connected to the drum driving and braking means for the other drum, relatively rotatable control shafts connected to said rods, respectively, and operating members for said control shafts, respectively.

17.* In a winding mechanism, relatively rotatable cable winding drums, drum driving means for each drum, drum braking means for each drum, and control means for said driving means and said braking means whereby when one drum is connected to its driving means the other drum is braked and including a control rod operatively connected to the drum driving meansand braking meansv for one drum, and a relatively rotatable control rod operatively connected to the drum driving and braking means for the other drum, relatively rotatable control shafts connected to said rods, respectively, said control shafts arranged at right angles to said control rods, beveled gearing connecting said rods and shafts, respectively, and operating members for said control shafts, respectively,

18. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum including slip controlled driving means having a frictionally controlled reaction member,

drum braking means for each drum, and coinmon controlling means for the reaction members' of said drum drive control means and the drum braking meansfor both drums.

19. Ina hoisting mechanism, relatively rotat-v able hoisting drums, drum driving means for each-` drum including slip controlled driving means:

having a frctionally controlled reaction member,

drum braking means-for each drum, and a com-I monfcontrol lever for controlling the reaction.

members of said drum driving means and said drum braking means.

20. In a hoisting mechanism, relatively rotatable hoisting drums, drum driving means for each drum including slip controlled driving means hav-v ing a frictionally controlled reaction member,

drum braking means forA each drum, and controlling means for the reaction members of said drum driving means and said drum braking means including a common control element for both drums.

ROBERT C. OSGOOD. 

